Release 4.14 lib/check_signature.c

// SPDX-License-Identifier: GPL-2.0
#include <linux/io.h>
#include <linux/export.h>

/**
 *      check_signature         -       find BIOS signatures
 *      @io_addr: mmio address to check
 *      @signature:  signature block
 *      @length: length of signature
 *
 *      Perform a signature comparison with the mmio address io_addr. This
 *      address should have been obtained by ioremap.
 *      Returns 1 on a match.
 */



int check_signature(const volatile void __iomem *io_addr,
			const unsigned char *signature, int length)
{
	while (length--) {
		if (readb(io_addr) != *signature)
			return 0;
		io_addr++;
		signature++;
	}
	return 1;
}
Contributors
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Andrew Morton
50
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1
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Total
50
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EXPORT_SYMBOL(check_signature);
Overall Contributors
Person
Tokens
Prop
Commits
CommitProp
Andrew Morton
61
96.83%
1
33.33%
Greg Kroah-Hartman
1
1.59%
1
33.33%
Paul Gortmaker
1
1.59%
1
33.33%
Total
63
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3
100.00%
Directory: lib

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